---
title: "Mortise Lock — $388K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/mortise-lock"
last_updated: "2026-08-06T20:01:03.405Z"
locale: en
meta:
description: "Niche score 52/100 · $388K/yr market · 316K searches/yr · $45.90 avg price. High returns (6.4%) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 52/100 · $388K/yr market · 316K searches/yr · $45.90 avg price. High returns (6.4%) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Mortise Lock — $388K/yr Amazon US Niche (2026) - Flapen"
---
# **mortise lock**
**Worth a look**
Shows a sweet-spot price point ($45.90 avg), but high returns (6.4%) keeps it on the watch list.
Market size 55Growth 23Conversion 33Competition 83Returns 20Price range 23Avg price 95Brand share 54Review moat 70Quality gap 81
**Avg price**
**Incredible****$45.90**
avg listing price — sweet spot $15–$100
**Competition**
**Great****32%**
top-5 click share — an open shelf
**Quality gap**
**Great****4.2★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Good****718.82**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Good****$388K**
$388K/yr · 316K searches
**Brand share**
**Good****73%**
top-5 brand share — brands hold most of the demand
**Conversion**
**Okay****2.7%**
search→purchase rate — share of searches ending in a sale
**Growth**
**Bad****-4.9%**
90-day search growth — must beat 0% to launch
**Price range**
**Bad****$8.01–$377.65**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Returns**
**Bad****6.4%**
return rate — above 5% kills the launch gate
**Signals**[** High Returns**](https://flapen.com/research/niches?market=us&signal=high_returns "Return rate > 5%")
According to Flapen's Amazon United States niche tracking, mortise lock is a $388K/yr Amazon United States market (316K searches/yr). The top 5 brands hold 73% of demand. Verdict: Worth a look — 52/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **mortise lock market data**
- **Units sold / yr**
- **10K–13K**
- avg 100–250/product
- **Revenue / yr**
- **$459K–$574K**
- units × avg price
- **Conversion rate**
- **2.7%**
- **Avg BSR**
- **#284**
- **Page quality**
- **0%**
- **Prime**
- **94%**
- **Sponsored**
- **85%**
- **Out of stock**
- **4.3%**
- **Avg brand age**
- **51 months**
- **Avg seller age**
- **159 days**
## **Competition & brand share**
Clicks spread well past the top 5 (32% combined) — an open shelf where new products get seen.
**Brands**
**25 **▲rising
**Sellers**
**92**
**Top-5 brand share**
**73%**
Top 20: 97%
**Top-5 click share**
**32%**
Top 20: 68%
**Open market**
**24%**
- newliplace28% - PRIME-LINE25% - Ruigrit8% - MaxxGeek6% - Segal6% - ToPToToo4%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -4.9% search growth over the last 90 days.
7K5KPrime Day '25Spike '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.3×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/mortise-lock/trend)
## **Top mortise lock search terms**
- **mortise lock**89K/yr-4.0%2.4% conv. - **mortise lock set exterior door**43K/yr+6.5%0.8% conv. - **mortise lock set interior door**41K/yr-20.8%2.7% conv. - **mortise door knob**24K/yr-0.3%2.3% conv. - **mortise locks**10K/yr+28.5%1.1% conv. - **mortise lock set**13K/yr+9.4%1.9% conv. - **mortise lock replacement**10K/yr+18.6%2.3% conv. - **old style door knob conversion kit**13K/yr-22.2%1.6% conv. - **mortise**9K/yr+16.4%0.6% conv. - **old door knob**8K/yr+1.1%3.1% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/mortise-lock/search-terms)
## **Top mortise lock products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%3%$12K6%$23K9%$35K12%$47K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Newliplace Mortise Lock Set for Interior Door Vintage Door Knobs with Lock and Skeleton Key Antique Door Knobs Oil Rubbed Bronze Finish**newliplace**$21.39**4.2★680 rev](https://www.amazon.com/dp/B0BR5C9XXR) [2**Prime-Line E 2495 Mortise Keyed Lock Set with Classic Bronze Knob Perfect for Replacing Broken Antique Lock Sets Fits 1-3/8 In.-1-3/4 In. Interior Doors Classic Bronze (Single Pack)**PRIME-LINE**$22.35**4.3★4,783 rev](https://www.amazon.com/dp/B00CTHSV4O) [3**Ruigrit Vintage Mortise Lock Set for Interior Doors Antique Door Knobs with Heavy Duty Rustproof Zinc Alloy & Skeleton Key Fits 1-3/8 to 1-3/4 Entryway Replacement Matte Black**Ruigrit**$21.02**4.2★145 rev](https://www.amazon.com/dp/B0F9VMP7T2) [4**Prime-Line E 2014 Mortise Lock - Adjustable Spring-Loaded Hook Latch for Sliding Patio Doors Constructed of Wood Aluminum and Vinyl 3-11/16 In. 45 Keyway Round Face (Single Pack)**PRIME-LINE**$10.05**4.4★5,722 rev](https://www.amazon.com/dp/B000I1CL8A) [5**Newliplace Mortise Lock Set for Interior Door Vintage Old Door Knobs with Lock and Skeleton Key Antique Door Knobs Matte Black Finish**newliplace**$24.90**4.2★680 rev](https://www.amazon.com/dp/B0D73N656R)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Tandefio 1 Set Double Cylinder Mortise Lock Iron Gate Ornamental Latch Set with 2-1/2 Backset 1 X 7-1/8 Faceplate Polish Brass(Right Hand Reverse Brass)**Tandefio**$80.02**20 rev10mo ago](https://www.amazon.com/dp/B0FSL51RF6) [**MaxxGeek Flat Slot Storm Door Handle Complete Set Mortise Keyed Lever Mount Latch with Deadbolt for Screen and Storm Doors (Matte Black)**MaxxGeek**$68.57**226 rev1y ago](https://www.amazon.com/dp/B0FD3LLV7V) [**Antique Interior Door Knobs Mortise Lock Set with Skeleton Key Locks Vintage Door Hardware Parts Fit 1-3/8 -1-3/4 Thick Doors 2-3/8 Backset Reversible Latch Matte Black 1 Pack**TPard**$20.01**65 rev1y ago](https://www.amazon.com/dp/B0FC2RGCS5) [**Ruigrit Vintage Mortise Lock Set for Interior Doors Antique Door Knobs with Heavy Duty Rustproof Zinc Alloy & Skeleton Key Fits 1-3/8 to 1-3/4 Entryway Replacement Matte Black**Ruigrit**$21.02**145 rev1y ago](https://www.amazon.com/dp/B0F9VMP7T2) [**Ruigrit Mortise Lock Set Interior Door with Vintage Door Knob Old Door Knob Replacement Fits 1-3/8 to 1-3/4 Doors Rustproof Zinc Alloy & Skeleton Key Oil Rubbed Bronze**Ruigrit**$21.39**145 rev1y ago](https://www.amazon.com/dp/B0F9VMP7T1)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Tandefio 1 Set Double Cylinder Mortise Lock Iron Gate Ornamental Latch Set with 2-1/2 Backset 1 X 7-1/8 Faceplate Polish Brass(Right Hand Reverse Brass)**Tandefio**$80.02**4.6★**▲ 173%**](https://www.amazon.com/dp/B0FSL51RF6) [**MaxxGeek Antique Mortise Keyed Lock Set with Glasses Knobs. Replacing Vintage Door Knob Sets with Skeleton Keys Fits 1-3/8-1-3/4 Interior Doors Backset 2-3/8 Oil Rubbed Bronze 1 Pack**MaxxGeek**$18.00**4.2★**▲ 137%**](https://www.amazon.com/dp/B0BTLH8PT7) [**Newliplace Mortise Lock Set for Interior Door Vintage Door Knobs with Lock and Skeleton Key Antique Door Knobs Oil Rubbed Bronze Finish**newliplace**$21.39**4.2★**▲ 70%**](https://www.amazon.com/dp/B0BR5C9XXR) [**ConsitDone Mortise Keyed Door Knob Set for 1-3/8 to 1-3/4 Thick Interior Doors 2-3/8 Backset Includes 2 Classic Skeleton Keys (1 Matte Black)**ConsitDone**$20.09**4.2★**▲ 51%**](https://www.amazon.com/dp/B0FK4JTSGZ) [**Ruigrit Vintage Mortise Lock Set for Interior Doors Antique Door Knobs with Heavy Duty Rustproof Zinc Alloy & Skeleton Key Fits 1-3/8 to 1-3/4 Entryway Replacement Matte Black**Ruigrit**$21.02**4.2★**▲ 33%**](https://www.amazon.com/dp/B0F9VMP7T2)
**~~View all trending →~~**
## **What buyers say about mortise lock**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**20%
*“Fit perfect”*
**Quality-Overall**19%
*“Build quality feels solid”*
**Assembly/Installation**13%
*“Installed with no problems”*
**Locking Mechanism**10%
*“the lock mechanism is great quality”*
**Advertised Vs Actual Product**7%
*“As described”*
**Value For Money**4%
*“GOOD DEAL”*
**Design-Overall**3%
*“This looks very classy”*
**Ease Of Use**3%
*“Quick and easy”*
**Strength**2%
*“Strong and easy to replace and use”*
**Efficiency**2%
*“it works well”*
### **What buyers complain about **
**Quality-Overall**20%
*“bad quality, stopped working after a few months”*
**Locking Mechanism**15%
*“Doesn't stay locked”*
**Size-Overall**11%
*“Too small”*
**Durability**8%
*“Breaks”*
**Assembly/Installation**4%
*“the installation was a bit difficult”*
**Strength**4%
*“keeps falling apart”*
**Instructions/User Manual/Troubleshooting**3%
*“Terrible instructions”*
**Advertised Vs Actual Product**3%
*“Not reversible like the description says”*
**Ease Of Use**3%
*“Hard to turn”*
**Value For Money**3%
*“Definitely did not meet expectations especially for the price”*
### **Top return reasons **
**Size-Overall**57%
**Locking Mechanism**7%
**Compatibility-Overall**6%
**Mechanism Issues**5%
**Defective Material/Parts**4%
**Advertised Vs Actual Product**4%
**Functionality-Overall**4%
**Color**3%
**Value For Money**1%
**Assembly/Installation**1%
## **Common questions**
- **Is mortise lock profitable to sell on Amazon United States?**
- The niche generates $388K/yr across 62 tracked products. 0 of 4 products launched in the last 360 days are still selling. 90-day search growth is -4.9%. Flapen's verdict: Worth a look (52/100).
- **How competitive is the mortise lock niche?**
- 25 brands and 92 sellers compete. The top 5 products take 32% of clicks and top 5 brands hold 73% of demand.
- **What do buyers complain about in mortise lock?**
- Top complaints mined from reviews: Quality-Overall, Locking Mechanism, Size-Overall. The return rate is 6.4% — above our launch gate.
- **When does demand for mortise lock peak?**
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- **What does it cost to enter the mortise lock niche?**
- Listings span $8.01–$377.65; the average listing price is $45.90 (sweet spot $15–$100). The average incumbent carries 719 reviews — the moat a new listing must climb.
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